FileDate() throws unexpected error

These evaluator commands work fine but still throw an error.

@nodeselect
@output:{=filepath=}
@output:{=FileDate(filepath)=}
XML
<?xml version="1.0"?>
<button backcol="none" display="both" label_pos="right" textcol="none">
	<label>Test FileDate</label>
	<icon1>#newcommand</icon1>
	<function type="normal">
		<instruction>@nodeselect</instruction>
		<instruction>@output:{=filepath=}</instruction>
		<instruction>@output:{=FileDate(filepath)=}</instruction>
	</function>
</button>

Fixed in the next beta. Thanks for the report!

In 13.24.1, FileDate() will run the demo from above just fine, but will struggle with this command and will suppress output to the button's log:

@nodeselect
@output:{=filepath=}
SetAttr FILE={filepath} META releasedate:{=FileDate(filepath, "c") As "D#yyyy-MM-dd"=}

Fixed in the next beta.